1
|
Amiri-Ardekani E, Kazemi A, Sasani N, Fanfulla F, Clark CC. The association of meal glycemic index/load with quantitative and qualitative indicators of sleep: a systematic review. Minerva Med 2022; 113:1008-1016. [PMID: 33949181 DOI: 10.23736/s0026-4806.21.07444-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
INTRODUCTION We sought to systematically review the association between meal glycemic index or glycemic load and sleep indicators. EVIDENCE ACQUISITION PubMed, Scopus, Web of Science, and Embase were searched up to March 2021. Both observational and clinical trials studies, with both male and female participants of all ages, were included. EVIDENCE SYNTHESIS A total of 10 studies were included in this review; six with clinical trial and four with cross-sectional design. Among the six clinical trial, three studies indicated a significant effect of high glycemic index on sleep (two in young male athletes [N.=8 and N.=9] and one in adults [N.=8]), while three others failed to detect any significant effect (young males [N.=12], children [N.=8], toddlers [N.=56]). Among the cross-sectional studies, high glycemic index meals were associated with improved sleep duration or quality in two studies (594 toddlers and 1848 adults), however, contrastingly, were also associated with sleep disturbances (108 students and 53,069 postmenopausal women). CONCLUSIONS High glycemic index meals likely improve sleep onset latency in young males. For other indicators of sleep quality and other population groups, the results are equivocal. Most of the available studies were conducted in special population groups and were inadequately designed; whilst clinical trials were of short duration and small sample sizes. Therefore, further well-designed clinical trials are required before further definitive conclusions can be made.
Collapse
Affiliation(s)
- Ehsan Amiri-Ardekani
- Department of Phytopharmaceuticals (Traditional Pharmacy), Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.,Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran.,Student Association of Indigenous Knowledge, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Asma Kazemi
- Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran -
| | - Najmeh Sasani
- Nutrition Research Center, Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Francesco Fanfulla
- Respiratory Function and Sleep Unit, Scientific Institute of Pavia and Montescano, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
| | - Cain C Clark
- Center for Intelligent Healthcare, Coventry University, Coventry, UK
| |
Collapse
|
2
|
The impact of glycaemic load on cognitive performance: A meta-analysis and guiding principles for future research. Neurosci Biobehav Rev 2022; 141:104824. [PMID: 35963545 DOI: 10.1016/j.neubiorev.2022.104824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/23/2022]
Abstract
The effect of breakfast glycaemic load (GL) on cognition was systematically examined. Randomised and non-randomised controlled trials were identified using PubMed, Scopus, and Cochrane Library (up to May 2022). 15 studies involving adults (aged 20 - 80 years) were included. Studies had a low risk, or some concerns, of bias. A random-effects meta-analysis model revealed no effect of GL on cognition up to 119 min post-consumption. However, after 120 min, immediate episodic memory scores were better following a low-GL compared to a high-GL (SMD = 0.16, 95% confidence interval [CI] = -0.00 to 0.32, p = 0.05, I2 = 5%). Subgroup analyses indicated that the benefit was greater in younger adults (<35 years) and those with better GT. A qualitative synthesis of 16 studies involving children and adolescents (aged 5 - 17 years) suggested that a low-GL breakfast may also benefit episodic memory and attention after 120 min. Methodological practises were identified which could explain a failure to detect benefits in some studies. Consequently, guiding principles were developed to optimise future study design.
Collapse
|
3
|
Dwivedi AK, Dubey P, Reddy SY, Clegg DJ. Associations of Glycemic Index and Glycemic Load with Cardiovascular Disease: Updated Evidence from Meta-analysis and Cohort Studies. Curr Cardiol Rep 2022; 24:141-161. [PMID: 35119682 DOI: 10.1007/s11886-022-01635-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/02/2021] [Indexed: 02/01/2023]
Abstract
PURPOSE OF REVIEW Diet and lifestyle patterns are considered major contributory factors for cardiovascular disease (CVD) and mortality. In particular, consuming a diet higher in carbohydrates (not inclusive of fruits and vegetables, but more processed carbohydrates) has been associated with metabolic abnormalities that subsequently may increase the risk of CVD and related mortality. Glycemic index (GI) and glycemic load (GL) are values given to foods based on how fast the body converts carbohydrates into glucose also referred to as the glycemic burden of carbohydrates from foods. Conflicting associations of how high GI and GL influence CVDs have been observed even in high-quality meta-analysis studies. We synthesize and report the associations of high GI and GL with various CVDs by sex, obesity, and geographical locations using an updated review of meta-analysis and observational studies. RECENT FINDINGS We identified high GI or high GL is associated with an increased risk of CVD events including diabetes (DM), metabolic syndrome (MS), coronary heart disease (CHD), stroke, and stroke mortality in the general population, and the risk of CVD outcomes appears to be stratified by sex, obesity status, and preexisting CVD. Both high GI and GL are associated with DM and CHD in the general population. However, high GI is strongly associated with DM/MS, while high GL is strongly associated with an increased risk of CHD in females. In addition, high GL is also associated with incident stroke, and appears to be associated with CVD mortality in subjects with preexisting CVD or high BMI and all-cause mortality in non-obese DM subjects. However, high GI appears to be associated with CVD or all-cause mortality only in females without CVD. High GI/GL is an important risk factor for CVD outcomes in the general population. High GI seems to be markedly associated with DM/MS, and it may enhance the risk of CVD or all-cause mortality in both sexes and predominately females. Although both high GI and high GL are risk factors for CHD in females, high GL is associated with CVD outcomes in at-risk populations for CVD. These data suggest that while high GI increases the propensity of CVD risk factors and mortality in healthy individuals, high GL contributes to the risk of severe heart diseases including CVD or all-cause mortality, particularly in at-risk populations. These data indicate dietary interventions designed for focusing carbohydrate quality by lowering both GI and GL are recommended for preventing CVD outcomes across all populations.
Collapse
Affiliation(s)
- Alok Kumar Dwivedi
- Division of Biostatistics & Epidemiology, Department of Molecular and Translational Medicine, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, 5001 El Paso Drive, TX, 79905, USA.
| | - Pallavi Dubey
- Department of Obstetrics & Gynecology, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, 4800 Alberta Avenue, El Paso, TX, 79905, USA
| | - Sireesha Y Reddy
- Department of Obstetrics & Gynecology, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, 4800 Alberta Avenue, El Paso, TX, 79905, USA
| | - Deborah J Clegg
- Department of Internal Medicine, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, 4800 Alberta Avenue, El Paso, TX, 79905, USA
| |
Collapse
|
4
|
Fucoidan Regulates Starch Digestion: In Vitro and Mechanistic Study. Foods 2022; 11:foods11030427. [PMID: 35159577 PMCID: PMC8834454 DOI: 10.3390/foods11030427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/19/2022] [Accepted: 01/26/2022] [Indexed: 02/06/2023] Open
Abstract
Bread is a high glycemic index (GI) food with high amounts of readily digestible carbohydrates. Fucoidan refers to a group of sulfated polysaccharides isolated from brown seaweed that has been gaining traction for its many functional properties, including its ability to inhibit starch hydrolases. In this study, fucoidan was added into bread to lower the glycemic index of bread. Fucoidan fortification at 3.0% reduced the starch digestion rate of baked bread by 21.5% as compared to control baked bread. This translated to a 17.7% reduction in the predicted GI (pGI) with 3.0% of fucoidan. Fucoidan was retained in the bread after baking. Although the in vitro bioavailability of fucoidan was negligible, the in vitro bioaccessibility of fucoidan was high, at 77.1–79.8%. This suggested that although fucoidan may not be absorbed via passive diffusion, there is potential for the fucoidan to be absorbed via other modes of absorption. Thus, there is a potential for the use of fucoidan as a functional ingredient in bread to reduce the glycemic potential of bread.
Collapse
|
5
|
Flavel M, Jois M, Kitchen B. Potential contributions of the methodology to the variability of glycaemic index of foods. World J Diabetes 2021; 12:108-123. [PMID: 33594331 PMCID: PMC7839170 DOI: 10.4239/wjd.v12.i2.108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/03/2020] [Accepted: 12/23/2020] [Indexed: 02/06/2023] Open
Abstract
Glycaemic index (GI) testing provides a useful point of comparison between carbohydrate sources. For this comparison to be meaningful, the methods used to determine GI values need to be rigorous and consistent between testing events. This requirement has led to increasing standardization of the GI methodology, with an international standard developed in joint consultation with FAO/WHO (ISO 26642:2010) currently the most up to date document. The purpose of this review is to compare the international standard to methods of published studies claiming to have performed a GI test. This analysis revealed that the international standard permits a wide range of choices for researchers when designing a GI testing plan, rather than a single standardized protocol. It has also been revealed that the literature contains significant variation, both between studies and from the international standard for critical aspects of GI testing methodology. The primary areas of variation include; what glucose specification is used, which reference food is used, how much reference food is given, what drink is given during testing, the blood sampling site chosen and what assay and equipment is used to measure blood glucose concentration. For each of these aspects we have explored some of the methodological and physiological implications of these variations. These insights suggest that whilst the international standard has assisted with framing the general parameters of GI testing, further stan-dardization to testing procedures is still required to ensure the continued relevance of the GI to clinical nutrition.
Collapse
Affiliation(s)
- Matthew Flavel
- Bioactive Division, The Product Makers, Keysborough 3173, Victoria, Australia
- School of Life Sciences, La Trobe University, Bundoora 3086, Australia
| | - Markandeya Jois
- School of Life Sciences, La Trobe University, Bundoora 3086, Australia
| | - Barry Kitchen
- Bioactive Division, The Product Makers, Keysborough 3173, Victoria, Australia
- School of Life Sciences, La Trobe University, Bundoora 3086, Australia
| |
Collapse
|
6
|
Bhavadharini B, Mohan V, Dehghan M, Rangarajan S, Swaminathan S, Rosengren A, Wielgosz A, Avezum A, Lopez-Jaramillo P, Lanas F, Dans AL, Yeates K, Poirier P, Chifamba J, Alhabib KF, Mohammadifard N, Zatońska K, Khatib R, Vural Keskinler M, Wei L, Wang C, Liu X, Iqbal R, Yusuf R, Wentzel-Viljoen E, Yusufali A, Diaz R, Keat NK, Lakshmi PVM, Ismail N, Gupta R, Palileo-Villanueva LM, Sheridan P, Mente A, Yusuf S. White Rice Intake and Incident Diabetes: A Study of 132,373 Participants in 21 Countries. Diabetes Care 2020; 43:2643-2650. [PMID: 32873587 PMCID: PMC7576435 DOI: 10.2337/dc19-2335] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 07/08/2020] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Previous prospective studies on the association of white rice intake with incident diabetes have shown contradictory results but were conducted in single countries and predominantly in Asia. We report on the association of white rice with risk of diabetes in the multinational Prospective Urban Rural Epidemiology (PURE) study. RESEARCH DESIGN AND METHODS Data on 132,373 individuals aged 35-70 years from 21 countries were analyzed. White rice consumption (cooked) was categorized as <150, ≥150 to <300, ≥300 to <450, and ≥450 g/day, based on one cup of cooked rice = 150 g. The primary outcome was incident diabetes. Hazard ratios (HRs) were calculated using a multivariable Cox frailty model. RESULTS During a mean follow-up period of 9.5 years, 6,129 individuals without baseline diabetes developed incident diabetes. In the overall cohort, higher intake of white rice (≥450 g/day compared with <150 g/day) was associated with increased risk of diabetes (HR 1.20; 95% CI 1.02-1.40; P for trend = 0.003). However, the highest risk was seen in South Asia (HR 1.61; 95% CI 1.13-2.30; P for trend = 0.02), followed by other regions of the world (which included South East Asia, Middle East, South America, North America, Europe, and Africa) (HR 1.41; 95% CI 1.08-1.86; P for trend = 0.01), while in China there was no significant association (HR 1.04; 95% CI 0.77-1.40; P for trend = 0.38). CONCLUSIONS Higher consumption of white rice is associated with an increased risk of incident diabetes with the strongest association being observed in South Asia, while in other regions, a modest, nonsignificant association was seen.
Collapse
Affiliation(s)
- Balaji Bhavadharini
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Canada
| | - Viswanathan Mohan
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, Chennai, India
| | - Mahshid Dehghan
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Canada
| | - Sumathy Rangarajan
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Canada
| | | | - Annika Rosengren
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | | | | | - Patricio Lopez-Jaramillo
- Instituto Masira, Medical School, Universidad de Santander, and Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lulle, Bucaramanga, Colombia
| | | | - Antonio L Dans
- University of the Philippines College of Medicine, Manila, Philippines
| | - Karen Yeates
- Department of Medicine, Queen's University, Kingston, Canada
| | - Paul Poirier
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, Canada
| | - Jephat Chifamba
- Department of Physiology, University of Zimbabwe College of Health Sciences, Harare, Zimbabwe
| | - Khalid F Alhabib
- Department of Cardiac Sciences, King Fahad Cardiac Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Noushin Mohammadifard
- Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Katarzyna Zatońska
- Department of Social Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Rasha Khatib
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Mirac Vural Keskinler
- Department of Internal Medicine, Goztepe Training and Research Hospital, Istanbul Medeniyet University, Istanbul, Turkey
| | - Li Wei
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Chuangshi Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaoyun Liu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Romaina Iqbal
- Department of Community Health Sciences and Medicine, Aga Khan University, Karachi, Pakistan
| | - Rita Yusuf
- Independent University, Dhaka, Bangladesh
| | | | - Afzalhussein Yusufali
- Hatta Hospital, Dubai Medical University, Dubai Health Authority, Dubai, United Arab Emirates
| | - Rafael Diaz
- Estudios Clínicos Latinoamerica, Rosario, Santa Fe, Argentina
| | - Ng Kien Keat
- Universiti Teknologi MARA, Sungai Buloh, Malaysia.,University College Sedaya International University, Cheras, Malaysia
| | - P V M Lakshmi
- School of Public Health, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Noorhassim Ismail
- Department of Community Health, University Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Rajeev Gupta
- Eternal Heart Care Centre and Research Institute, Jaipur, India
| | - Lia M Palileo-Villanueva
- University of the Philippines College of Medicine, University of the Philippines Manila, Manila, Philippines
| | - Patrick Sheridan
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Canada
| | - Andrew Mente
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Canada
| | - Salim Yusuf
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Canada
| |
Collapse
|
7
|
Intrinsic grain starch digestibility affects the concentration of faecal markers of colonic fermentation and bodyweight gain without affecting feed intake in pigs. Anim Feed Sci Technol 2020. [DOI: 10.1016/j.anifeedsci.2020.114599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Breakfast consumption modulates postprandial glycaemic, insulinaemic and NEFA response in pre-diabetic Asian males. Br J Nutr 2020; 123:664-672. [PMID: 31831088 DOI: 10.1017/s0007114519003180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Breakfast consumption is associated with a variety of nutritional and lifestyle-related health outcomes. The objective of the present study was to investigate how the consumption of breakfast affected blood glucose, insulin and NEFA profiles. A lower postprandial blood glucose, insulin and NEFA response is associated with a lower risk of development of metabolic diseases. In a randomised crossover non-blind design, thirteen pre-diabetic Chinese adult males (BMI 26·7 (sd 4·2) kg/m2) attended two sessions where they either consumed a high-glycaemic index breakfast or no breakfast consumption. Changes in glycaemic response over 27 h periods were measured using the Medtronic MiniMed iProTM2 continuous glucose monitoring system. Blood samples were collected using a peripheral venous catheter at fixed intervals for 3 h after the test meal and 3 h after standardised lunch consumption. Postprandial glucose, insulin and NEFA response was calculated as total AUC and incremental AUC using the trapezoidal rule that ignored the area under the baseline. It was found that breakfast consumption significantly decreased postprandial glucose, insulin and NEFA excursion response at lunch time (P = 0·001). Consumption of breakfast attenuated blood glucose profiles by minimising glycaemic excursions and reduced both insulinaemic and NEFA responses in pre-diabetic Asian males during the second meal. This simple dietary intervention may be a novel approach to help improve subsequent lunch glycaemic responses in Asians at high risk of developing diabetes.
Collapse
|
9
|
Lowering breakfast glycemic index and glycemic load attenuates postprandial glycemic response: A systematically searched meta-analysis of randomized controlled trials. Nutrition 2020; 71:110634. [DOI: 10.1016/j.nut.2019.110634] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/02/2019] [Accepted: 10/19/2019] [Indexed: 11/18/2022]
|
10
|
Bravo C, Santos JL, Castillo G, Olivares G, Parada J. Microstructure of starch-based meals with either palm or soybean oils alter in vitro starch digestibility with no major effects on glycaemic responses. Int J Food Sci Nutr 2019; 71:604-613. [PMID: 31746260 DOI: 10.1080/09637486.2019.1693521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Glycaemic response (GR) to starch-based meals depends on their food composition and microstructure. We studied the effect of palm and soybean oils on the microstructure of a solid starch-oil-gluten matrix, on the starch gelatinisation and in vitro digestibility. Additionally, a pilot cross-over study was carried out to assess GR after eating gelatinised starch/gluten-based foods with the addition of either palm or soybean oil in 8 young non-diabetic female volunteers (ISRCTN39636850). Both types of foods generated similar starch gelatinisation temperature. Starch/gluten-based food with soybean oil had rougher microstructure compared to food with palm oil, showing a higher initial and lower final in vitro digestion. Administration of starch/gluten-based meals with either palm or soybean oils to volunteers show very similar postprandial glucose or insulin responses. In conclusion, differences in fatty acid composition changes food microstructure and in vitro starch digestibility, with no major effects on glycaemic responses in female volunteers.
Collapse
Affiliation(s)
- Carolina Bravo
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José L Santos
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gabriel Castillo
- Escuela de Ingeniería en Alimentos, Faculty of Agricultural Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Gabriela Olivares
- Escuela de Ingeniería en Alimentos, Faculty of Agricultural Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Javier Parada
- Faculty of Agricultural Sciences, Institute of Food Science and Technology, Universidad Austral de Chile, Valdivia, Chile
| |
Collapse
|
11
|
Shahdadian F, Saneei P, Milajerdi A, Esmaillzadeh A. Dietary glycemic index, glycemic load, and risk of mortality from all causes and cardiovascular diseases: a systematic review and dose-response meta-analysis of prospective cohort studies. Am J Clin Nutr 2019; 110:921-937. [PMID: 31187856 DOI: 10.1093/ajcn/nqz061] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 03/25/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Previous findings on the association of dietary glycemic index (GI) and glycemic load (GL) with mortality are conflicting. OBJECTIVES The aim of this study was to summarize earlier findings on the association between dietary GI and GL and the risk of cardiovascular disease (CVD) and all-cause mortality. METHODS A comprehensive literature search was performed of electronic databases, including MEDLINE (PubMed), Scopus, ISI Web of Science, EMBASE, and Google scholar, up to September 2018. Prospective cohort studies that reported GI and GL as the exposure and all-cause or CVD mortality as the outcome were included in the analysis. The random-effects model was used to estimate pooled RR and 95% CIs of all-cause and CVD mortality. RESULTS Eighteen cohort studies with a total of 251,497 participants, reporting 14,774 cases of all-cause mortality and 3658 cases of CVD mortality, were included in the present analysis. No significant association was found between dietary GI and all-cause mortality (RR: 1.07; 95% CI: 0.96, 1.19) and CVD mortality (RR: 1.02; 95% CI: 0.87, 1.20). In addition, dietary GL was not associated with all-cause mortality (RR: 1.08; 95% CI: 0.93, 1.27) or CVD mortality (RR: 1.07; 95% CI: 0.92, 1.25). However, the highest dietary GI, in comparison to the lowest one, significantly increased the risk of all-cause mortality in women (RR: 1.17; 95% CI: 1.02, 1.35). No evidence for a nonlinear association between dietary GI or GL and all-cause and CVD mortality was found (P > 0.05). CONCLUSIONS This meta-analysis of prospective cohort studies showed no significant association between either dietary GI or GL and all-cause and CVD mortality in men, but a positive association of GI with all-cause mortality in women.
Collapse
Affiliation(s)
- Farnaz Shahdadian
- Students' Scientific Research Center.,Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parvane Saneei
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Alireza Milajerdi
- Students' Scientific Research Center.,Department of Community Nutrition, School of Nutritional Sciences and Dietetics
| | - Ahmad Esmaillzadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics.,Obesity and Eating Habits Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
12
|
Guerrero CH, Gamboa-Loira B, Mérida-Ortega Á, López-Carrillo L. Dietary Glycemic Index and Glycemic Load and Risk of Breast Cancer by Molecular Subtype in Mexican Women. Nutr Cancer 2019; 71:1283-1289. [PMID: 31058544 DOI: 10.1080/01635581.2019.1607408] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The objective was to estimate the risk of breast cancer (BC) molecular subtypes in relation to the average glycemic index (GI) and the dietary glycemic load (GL) in Mexican women. From 2007 to 2011, a study of incident cases and population controls was conducted in five states of northern Mexico. A subsample of 509 cases matched 1:1 by age with 509 controls was selected. With a food frequency questionnaire, information about diet was obtained, and GI and GL were calculated. The expression of human epidermal growth factor receptor 2 (HER2), and estrogen (ER) and progesterone (PR) receptors in tumors was obtained from medical records. Patients were classified as luminal A (RE+ and/or PR+/HER2-), HER2+ (RE+ and/or PR+/HER2+ and RE-/PR-/HER2+), or triple negative (TN) (RE-/PR-/HER2-). GI and GL associations with BC molecular subtypes were evaluated using conditional logistic regression models. GI was positively associated with luminal A (OR= 1.12; 95% CI: 1.03, 1.22), HER2+ (OR= 1.15; 95% CI: 1.02, 1.30), and TN (OR= 1.20; 95% CI: 1.03, 1.39) BC. GL was not associated with BC molecular subtypes. These results suggest that the type of carbohydrate consumed is associated with increased BC regardless of the luminal A, HER2+, and TN subtypes.
Collapse
Affiliation(s)
- Christian H Guerrero
- Center for Research in Health and Nutrition, National Institute of Public Health , Cuernavaca , Morelos, Mexico
| | - Brenda Gamboa-Loira
- Center for Population Health Research, National Institute of Public Health , Cuernavaca , Morelos, Mexico
| | - Ángel Mérida-Ortega
- Center for Population Health Research, National Institute of Public Health , Cuernavaca , Morelos, Mexico
| | - Lizbeth López-Carrillo
- Center for Population Health Research, National Institute of Public Health , Cuernavaca , Morelos, Mexico
| |
Collapse
|
13
|
Affiliation(s)
- Huicui Meng
- From the Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA
| | - Nirupa R Matthan
- From the Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA
| | - Alice H Lichtenstein
- From the Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA
| |
Collapse
|
14
|
de la Iglesia R, Loria-Kohen V, Zulet MA, Martinez JA, Reglero G, Ramirez de Molina A. Dietary Strategies Implicated in the Prevention and Treatment of Metabolic Syndrome. Int J Mol Sci 2016; 17:E1877. [PMID: 27834920 PMCID: PMC5133877 DOI: 10.3390/ijms17111877] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/07/2016] [Accepted: 10/31/2016] [Indexed: 02/06/2023] Open
Abstract
Metabolic syndrome (MetS) is established as the combination of central obesity and different metabolic disturbances, such as insulin resistance, hypertension and dyslipidemia. This cluster of factors affects approximately 10%-50% of adults worldwide and the prevalence has been increasing in epidemic proportions over the last years. Thus, dietary strategies to treat this heterogenic disease are under continuous study. In this sense, diets based on negative-energy-balance, the Mediterranean dietary pattern, n-3 fatty acids, total antioxidant capacity and meal frequency have been suggested as effective approaches to treat MetS. Furthermore, the type and percentage of carbohydrates, the glycemic index or glycemic load, and dietary fiber content are some of the most relevant aspects related to insulin resistance and impaired glucose tolerance, which are important co-morbidities of MetS. Finally, new studies focused on the molecular action of specific nutritional bioactive compounds with positive effects on the MetS are currently an objective of scientific research worldwide. The present review summarizes some of the most relevant dietary approaches and bioactive compounds employed in the treatment of the MetS to date.
Collapse
Affiliation(s)
- Rocio de la Iglesia
- GENYAL Platform on Nutrition and Health, IMDEA Food Institute, CEI UAM + CSIC, 28049 Madrid, Spain.
| | - Viviana Loria-Kohen
- GENYAL Platform on Nutrition and Health, IMDEA Food Institute, CEI UAM + CSIC, 28049 Madrid, Spain.
| | - Maria Angeles Zulet
- Department of Nutrition, Food Science and Physiology, University of Navarra, 31008 Pamplona, Spain.
- CIBER Fisiopatología de la Obesidad y la Nutrición (CIBERobn), 28029 Madrid, Spain.
| | - Jose Alfredo Martinez
- Department of Nutrition, Food Science and Physiology, University of Navarra, 31008 Pamplona, Spain.
- CIBER Fisiopatología de la Obesidad y la Nutrición (CIBERobn), 28029 Madrid, Spain.
| | - Guillermo Reglero
- GENYAL Platform on Nutrition and Health, IMDEA Food Institute, CEI UAM + CSIC, 28049 Madrid, Spain.
| | - Ana Ramirez de Molina
- GENYAL Platform on Nutrition and Health, IMDEA Food Institute, CEI UAM + CSIC, 28049 Madrid, Spain.
| |
Collapse
|
15
|
A three-step methodology for GI classification, GL estimation of foods by fuzzy c-means classification and fuzzy pattern recognition, and an LP-based diet model for glycaemic control. Food Res Int 2016. [DOI: 10.1016/j.foodres.2016.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
16
|
Gonzalez-Anton C, Rico MC, Sanchez-Rodriguez E, Ruiz-Lopez MD, Gil A, Mesa MD. Glycemic responses, appetite ratings and gastrointestinal hormone responses of most common breads consumed in Spain. A randomized control trial in healthy humans. Nutrients 2015; 7:4033-53. [PMID: 26024293 PMCID: PMC4488771 DOI: 10.3390/nu7064033] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 05/14/2015] [Accepted: 05/18/2015] [Indexed: 12/17/2022] Open
Abstract
The present study was carried out to determine the glycemic index (GI), glycemic load (GL), insulinemic index (InI), appetite ratings and postprandial plasma concentrations of gastrointestinal hormones related to the control of food intake after the ingestion of the five most common breads consumed in Spain with different compositions and manufacturing processes. Twenty-two healthy adults participated in a randomized crossover study. The breads tested were Ordinary, Precooked-Frozen, Candeal-flour, Alfacar whites and Wholemeal. All breads portions were calculated to supply 50 g of available carbohydrates. In addition, 50 g of glucose was used as a reference. A linear mixed-effects model was used to compare data calculated for all breads with glucose load. The GI value varied from 61 for the Wholemeal, to Alfacar 68, Ordinary 76, and 78 and 86 for the Precooked-Frozen and Candeal-flour breads, respectively. Wholemeal and Alfacar had lower GI than glucose. All tested breads had a lower GL (ranged 9 to 18) compared with glucose. Wholemeal GL was similar to Alfacar, but lower than the other white breads. InI were significantly lower for all breads (ranged 68 to 73) compared with glucose, and similar among them. The intake of the Wholemeal bread led to a higher release of gastric inhibitory polypeptide compared with the Ordinary and Precooked breads and to a higher release of pancreatic polypeptide compared with the Precooked-Frozen bread. All breads affected appetite ratings similarly. In conclusion, based on GL, the Wholemeal bread would be expected to exert a favorable glycemic response.
Collapse
Affiliation(s)
- Carolina Gonzalez-Anton
- Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "Jose Mataix", University of Granada, Avenida del Conocimiento s/n, 18100 Armilla (Granada), Spain.
| | - Maria C Rico
- Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "Jose Mataix", University of Granada, Avenida del Conocimiento s/n, 18100 Armilla (Granada), Spain.
| | - Estefania Sanchez-Rodriguez
- Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "Jose Mataix", University of Granada, Avenida del Conocimiento s/n, 18100 Armilla (Granada), Spain.
| | - Maria D Ruiz-Lopez
- Department of Nutrition and Food Science, Institute of Nutrition and Food Technology "Jose Mataix", University of Granada, Campus Universitario de Cartuja C.P., 18071 Granada (Granada), Spain.
| | - Angel Gil
- Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "Jose Mataix", University of Granada, Avenida del Conocimiento s/n, 18100 Armilla (Granada), Spain.
| | - Maria D Mesa
- Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "Jose Mataix", University of Granada, Avenida del Conocimiento s/n, 18100 Armilla (Granada), Spain.
| |
Collapse
|
17
|
Bordenave N, Kock LB, Abernathy M, Parcon JC, Gulvady AA, van Klinken BJW, Kasturi P. Toward a more standardised and accurate evaluation of glycemic response to foods: recommendations for portion size calculation. Food Chem 2015; 167:229-35. [PMID: 25148983 DOI: 10.1016/j.foodchem.2014.06.124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 05/28/2014] [Accepted: 06/30/2014] [Indexed: 11/29/2022]
Abstract
This study aimed at evaluating the adequacy of calculation methods for portions to be provided to subjects in clinical trials evaluating glycemic response to foods. Portion sizes were calculated for 140 food samples, based on Nutrition Facts labels (current practice) and actual available carbohydrate content (current recommendation), and compared against the amount of monosaccharides yielded by the digestive breakdown of their actual available carbohydrate content (basis for glycemic response to food). The current practice can result in significant under- or over-feeding of carbohydrates in 10% of tested cases, as compared to the targeted reference dosage. The method currently recommended can result in significantly inadequate yields of monosaccharides in 24% of tested cases. The current and recommended calculation methods do not seem adequate for a standardised evaluation of glycemic response to foods. It is thus recommended to account for the amount of absorbable monosaccharides of foods for portion size calculation.
Collapse
Affiliation(s)
- Nicolas Bordenave
- PepsiCo, Inc., Global R&D - Technical Insights, 617 W Main Street, Barrington, IL 60010, United States.
| | - Lindsay B Kock
- PepsiCo, Inc., Global R&D - Technical Insights, 617 W Main Street, Barrington, IL 60010, United States
| | - Mengyue Abernathy
- PepsiCo, Inc., Global R&D - Technical Insights, 617 W Main Street, Barrington, IL 60010, United States
| | - Jason C Parcon
- PepsiCo, Inc., Global R&D - Technical Insights, 617 W Main Street, Barrington, IL 60010, United States
| | - Apeksha A Gulvady
- PepsiCo, Inc., Global R&D - Nutrition, 617 W Main Street, Barrington, IL 60010, United States
| | | | - Prabhakar Kasturi
- PepsiCo, Inc., Global R&D - Technical Insights, 617 W Main Street, Barrington, IL 60010, United States
| |
Collapse
|
18
|
Senavirathna RMISK, Ekanayake S, Jansz ER, Welihinda J. Proximate composition, glycemic indices, and some factors affecting glycemic indices of underutilized tubers. STARCH-STARKE 2014. [DOI: 10.1002/star.201400059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Sagarika Ekanayake
- Faculty of Medical Sciences; University of Sri Jayewardenepura; Nugegoda Sri Lanka
| | | | - Jayantha Welihinda
- Department of Pre-clinical Sciences; Faculty of Medicine; General Sir John Kotalawala Defence University; Ratmalana Sri Lanka
| |
Collapse
|
19
|
Dietary glycaemic load associated with cognitive performance in elderly subjects. Eur J Nutr 2014; 54:557-68. [PMID: 25034880 DOI: 10.1007/s00394-014-0737-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 07/03/2014] [Indexed: 01/06/2023]
Abstract
PURPOSE Ageing is associated with loss of cognitive function and an increased risk of dementia which is expected to place growing demands on health and long-term care providers. Among multiple causative factors, evidence suggests that cognitive impairment in older subjects may be influenced by diet. The objective of this study was to examine the association between dietary patterns, dietary glycaemic load (GL) and cognition in older Irish adults. METHODS Community-dwelling subjects (n 208; 94 males and 114 females; aged 64-93 years) were analysed. Dietary intake was assessed using a validated semi-quantitative food frequency questionnaire. Cognitive capacity was tested using the Mini-Mental State Examination (MMSE). The data were clustered to derive patterns of dietary intake. Multivariable-adjusted logistic and Poisson regression models were used to examine the relationship between dietary GL and MMSE score. RESULTS Elderly subjects consuming 'prudent' dietary patterns (high in fruit, vegetables, fish, low-fat dairy and salad dressings and low in red meat and white bread) had higher MMSE scores (better cognitive function) than those consuming 'Western' dietary pattern (high in red meat and white bread and low in fruit and vegetables; P < 0.05). Logistic and Poisson regression analyses both indicated that the MMSE score was inversely associated with the GL of the diet (P < 0.05) even after adjusting for age, gender, diabetes, hypertension, healthy food diversity, nutritional status, residential property price, cardiovascular medications and energy intake. CONCLUSION In this community-dwelling elderly Irish cohort, consumption of a high glycaemic diet is associated with poorer cognitive performance as assessed by the MMSE.
Collapse
|
20
|
Lin CS, Brown LS, Kimokoti RW, Nunn ME, Millen BE. Authors' Response. J Acad Nutr Diet 2013; 113:768-9. [DOI: 10.1016/j.jand.2013.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Indexed: 10/26/2022]
|
21
|
Lin CS, Kimokoti RW, Brown LS, Kaye EA, Nunn ME, Millen BE. Methodology for adding glycemic index to the National Health and Nutrition Examination Survey nutrient database. J Acad Nutr Diet 2013; 112:1843-51. [PMID: 23102184 DOI: 10.1016/j.jand.2012.07.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Accepted: 07/30/2012] [Indexed: 11/17/2022]
Abstract
Generating valid estimates of dietary glycemic index (GI) and glycemic load (GL) has been a challenge in nutritional epidemiology. The methodologic issues may have contributed to the wide variation of GI/GL associations with health outcomes observed in existing literature. We describe a standardized methodology for assigning GI values to items in the National Health and Nutrition Examination Survey (NHANES) nutrient database using the new International Tables to develop research-driven, systematic procedures and strategies to estimate dietary GI/GL exposures of a nationally representative population sample. Nutrient databases for NHANES 2003-2006 contain information on 3,155 unique foods derived from the US Department of Agriculture National Nutrient Database for Standard Reference versions 18 and 20. Assignment of GI values were made to a subset of 2,078 carbohydrate-containing foods using systematic food item matching procedures applied to 2008 international GI tables and online data sources. Matching protocols indicated that 45.4% of foods had identical matches with existing data sources, 31.9% had similar matches, 2.5% derived GI values calculated with the formula for combination foods, 13.6% were assigned a default GI value based on low carbohydrate content, and 6.7% of GI values were based on data extrapolation. Most GI values were derived from international sources; 36.1% were from North American product information. To confirm data assignments, dietary GI and GL intakes of the NHANES 2003-2006 adult participants were estimated from two 24-hour recalls and compared with published studies. Among the 3,689 men and 4,112 women studied, mean dietary GI was 56.2 (men 56.9, women 55.5), mean dietary GL was 138.1 (men 162.1, women 116.4); the distribution of dietary GI was approximately normal. Estimates of population GI and GL compare favorably with other published literature. This methodology of adding GI values to an existing population nutrient database utilized systematic matching protocols and the latest comprehensive data sources on food composition. The database can be applied in clinical and survey research settings where there is interest in estimating individual and population dietary exposures and relating them to health outcomes.
Collapse
Affiliation(s)
- Chii-Shy Lin
- Department of Family Medicine, Taichung Veterans General Hospital, Taichung, Taiwan, Republic of China.
| | | | | | | | | | | |
Collapse
|
22
|
Dietary glycaemic load and odds of depression in a group of institutionalized elderly people without antidepressant treatment. Eur J Nutr 2012; 52:1059-66. [DOI: 10.1007/s00394-012-0412-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 06/26/2012] [Indexed: 10/28/2022]
|
23
|
Khan SK. The Glycemic Index/Load. Integr Med (Encinitas) 2012. [DOI: 10.1016/b978-1-4377-1793-8.00069-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
24
|
Glycemic and insulinemic responses to breakfast and succeeding second meal in type 2 diabetics. Int J Diabetes Dev Ctries 2011. [DOI: 10.1007/s13410-011-0044-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
|
25
|
Egan N, Read A, Riley P, Atiomo W. Evaluating compliance to a low glycaemic index (GI) diet in women with polycystic ovary syndrome (PCOS). BMC Res Notes 2011; 4:53. [PMID: 21385417 PMCID: PMC3060831 DOI: 10.1186/1756-0500-4-53] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 03/08/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A low Glycaemic Index (GI) diet may decrease some long-term health risks in Polycystic Ovary Syndrome (PCOS) such as endometrial cancer. This study was performed to assess compliance to a low GI diet in women with PCOS. Food diaries prospectively collected over 6 months from women on a low GI diet or healthy eating diet were analysed retrospectively. The women were recruited for a pilot randomised control trial investigating whether a low GI diet decreased the risk of Endometrial Cancer. Nine women with PCOS completed 33 food diaries (17 from women on a low GI diet and 16 from women on a healthy eating diet) recording 3023 food items (low GI group:n = 1457; healthy eating group:n = 1566). Data was analysed using Foster-Powell international values inserted into an SPSS database as no scientifically valid established nutrition software was found. The main outcome measures were mean item GI and Glyacemic Load (GL), mean meal GL, percentage high GI foods and mean weight loss. FINDINGS Women allocated the low GI diet had a statistically significant lower GI of food items (33.67 vs 36.91, p < 0.05), lower percentage of high GI foods (4.3% vs 12.1%, p < 0.05) and lower GL of food items and meals. CONCLUSION Women with PCOS on a low GI diet consumed food items with a significantly lower mean GI and GL compared to the healthy eating diet group. Longer term compliance needs evaluation in subsequent studies to ascertain that this translates to reduced long term health risks. TRIAL REGISTRATION ISRCTN: ISRCTN86420258.
Collapse
Affiliation(s)
- Nicola Egan
- Division of Human Development, School of Clinical Sciences, University of Nottingham D Floor, East Block, Queens Medical Centre Campus Nottingham University Hospitals, Nottingham NG7 2UH, UK.
| | | | | | | |
Collapse
|
26
|
Hettiaratchi UPK, Ekanayake S, Welihinda J. Chemical compositions and glycemic responses to banana varieties. Int J Food Sci Nutr 2011; 62:307-9. [DOI: 10.3109/09637486.2010.537254] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
27
|
Micha R, Rogers PJ, Nelson M. The glycaemic potency of breakfast and cognitive function in school children. Eur J Clin Nutr 2010; 64:948-57. [DOI: 10.1038/ejcn.2010.96] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
28
|
Radin RG, Palmer JR, Rosenberg L, Kumanyika SK, Wise LA. Dietary glycemic index and load in relation to risk of uterine leiomyomata in the Black Women's Health Study. Am J Clin Nutr 2010; 91:1281-8. [PMID: 20200259 PMCID: PMC2854903 DOI: 10.3945/ajcn.2009.28698] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND High dietary glycemic index (GI) and glycemic load (GL) may promote tumorigenesis by increasing endogenous concentrations of insulin-like growth factor I (IGF-I) or the bioavailability of estradiol. In vitro studies have shown that uterine leiomyoma (UL) cells proliferate in response to IGF-I and display increased IGF-I gene expression and protein synthesis. Previous epidemiologic studies suggest that a high GL is a risk factor for endometrial and ovarian cancers, which, like UL, are hormone-responsive tumors. OBJECTIVE We investigated the relation of dietary GI and GL with UL risk in the Black Women's Health Study. DESIGN In this prospective cohort study, we followed 21,861 premenopausal women for incident UL from 1997 to 2007. Diet was assessed in 1995 and 2001 with food-frequency questionnaires. We used Cox regression to estimate incidence rate ratios (IRRs) and 95% CIs, controlled for potential confounders. RESULTS During 162,604 person-years of follow-up, there were 5800 cases of UL diagnosed by ultrasound or surgery. Dietary GI was weakly associated with UL risk overall (IRR for highest compared with lowest quintile: 1.09; 95% CI: 0.99, 1.19; P for trend = 0.04). Positive associations were observed between GL and UL in women aged <35 y (IRR for highest compared with lowest quintile: 1.18; 95% CI: 1.02, 1.37; P for trend = 0.15) and between GI and UL in college-educated women (IRR for highest compared with lowest quintile: 1.17; 95% CI: 1.03, 1.34; P for trend = 0.004). CONCLUSIONS Our results suggest that high dietary GI and GL may be associated with an increased UL risk in some women. The observed associations warrant investigation in future studies.
Collapse
Affiliation(s)
- Rose G Radin
- Slone Epidemiology Center, Boston University, Boston, MA 02215, USA.
| | | | | | | | | |
Collapse
|
29
|
O'Sullivan TA, Bremner AP, O'Neill S, Lyons-Wall P. Comparison of multiple and novel measures of dietary glycemic carbohydrate with insulin resistant status in older women. Nutr Metab (Lond) 2010; 7:25. [PMID: 20370933 PMCID: PMC2859357 DOI: 10.1186/1743-7075-7-25] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Accepted: 04/07/2010] [Indexed: 11/29/2022] Open
Abstract
Background Previous epidemiological investigations of associations between dietary glycemic intake and insulin resistance have used average daily measures of glycemic index (GI) and glycemic load (GL). We explored multiple and novel measures of dietary glycemic intake to determine which was most predictive of an association with insulin resistance. Methods Usual dietary intakes were assessed by diet history interview in women aged 42-81 years participating in the Longitudinal Assessment of Ageing in Women. Daily measures of dietary glycemic intake (n = 329) were carbohydrate, GI, GL, and GL per megacalorie (GL/Mcal), while meal based measures (n = 200) were breakfast, lunch and dinner GL; and a new measure, GL peak score, to represent meal peaks. Insulin resistant status was defined as a homeostasis model assessment (HOMA) value of >3.99; HOMA as a continuous variable was also investigated. Results GL, GL/Mcal, carbohydrate (all P < 0.01), GL peak score (P = 0.04) and lunch GL (P = 0.04) were positively and independently associated with insulin resistant status. Daily measures were more predictive than meal-based measures, with minimal difference between GL/Mcal, GL and carbohydrate. No significant associations were observed with HOMA as a continuous variable. Conclusion A dietary pattern with high peaks of GL above the individual's average intake was a significant independent predictor of insulin resistance in this population, however the contribution was less than daily GL and carbohydrate variables. Accounting for energy intake slightly increased the predictive ability of GL, which is potentially important when examining disease risk in more diverse populations with wider variations in energy requirements.
Collapse
Affiliation(s)
- Therese A O'Sullivan
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, QLD, Australia.
| | | | | | | |
Collapse
|
30
|
Hu Y, Block G, Sternfeld B, Sowers M. Dietary Glycemic Load, Glycemic Index, and Associated Factors in a Multiethnic Cohort of Midlife Women. J Am Coll Nutr 2009; 28:636-47. [DOI: 10.1080/07315724.2009.10719796] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
31
|
Abstract
BACKGROUND/OBJECTIVES Diets with a high postprandial glycaemic response may contribute to the long-term development of insulin resistance and diabetes; however, earlier epidemiological studies are conflicting on whether glycaemic index (GI) or glycaemic load (GL) are dietary factors associated with the progression. Our objectives were to estimate GI and GL in a group of older women, and evaluate cross-sectional associations with insulin resistance. SUBJECTS/METHODS The subjects were 329 Australian women aged 42-81 years participating in year 3 of the Longitudinal Assessment of Ageing in Women study. Dietary intakes were assessed by diet history interviews and analysed using a customized GI database. Insulin resistance was defined as a homeostasis model assessment value of >3.99, based on fasting blood glucose and insulin concentrations. RESULTS GL was significantly higher in the 26 subjects who were classified as insulin resistant compared with subjects who were not (134+/-33 versus 114+/-24, P<0.001). In a logistic regression model, an increment of 15 GL units increased the odds of insulin resistance by 2.09 (95% confidence interval (1.55, 2.80), P<0.001) independently of potential confounding variables. No significant associations were found when insulin resistance was assessed as a continuous variable. CONCLUSIONS The results of this cross-sectional study support the concept that diets with a higher GL are associated with an increased risk of insulin resistance. Further studies are required to determine whether reducing the glycaemic intake, either by consuming lower GI foods or through smaller serves of carbohydrate, can contribute to a reduction in development of insulin resistance and long-term risk of type II diabetes.
Collapse
|
32
|
The influence of carbohydrate on cognitive performance: a critical evaluation from the perspective of glycaemic load. Br J Nutr 2009; 101:941-9. [DOI: 10.1017/s0007114508199019] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Links between nutrition and cognition are widely acknowledged. Within the context of short-term cognitive performance, carbohydrate has been the dietary component most commonly investigated. The majority of studies investigating the influence of carbohydrate on cognitive performance have employed oral glucose drink interventions followed by measures of performance on cognitive tests. More recently, studies have investigated the effect of different carbohydrates on cognitive performance rather than just pure glucose drinks. To date, studies have not been evaluated based on a standardised measure of glycaemic response, such as glycaemic load. The present review provides a critical evaluation of eight studies that have explored the relationships between food carbohydrate and cognitive performance and allow glycaemic load to be used as a basis for comparison. The key finding is that these provide insufficient evidence to support a consistent effect of glycaemic load on short-term cognitive performance. Future studies should employ consistent test methodologies and describe food interventions in more detail to facilitate meaningful comparisons and interpretations of results.
Collapse
|
33
|
Fajcsak Z, Gabor A, Kovacs V, Martos E. The effects of 6-week low glycemic load diet based on low glycemic index foods in overweight/obese children--pilot study. J Am Coll Nutr 2008; 27:12-21. [PMID: 18460477 DOI: 10.1080/07315724.2008.10719670] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To evaluate the effectiveness of a 6-week low Glycemic Load (GL) diet intervention based on low Glycemic Index (GI) foods on body weight, body composition, metabolic risk factors and satiety in overweight/obese pre-pubertal children. METHODS Following a pediatric examination 8 healthy, average age 11 year old, Caucasian, pre-pubertal overweight/obese (BMI = 24, 7 +/- 3.8 kg/m(2)) children participated in the study. The Low GL diet intervention was based on the replacement of at least 50% of the high GI foods with Low-GI foods. The children with one of their parents participated in weekly nutrition consultations. Body composition, fasting glucose, insulin, cholesterol and triglyceride were measured before and after the study. Dietary changes were made based on weekly 4-day food-diaries. RESULTS Despite no change in body weight, there was a significant (p < 0.05) reduction in % body fat (29.4 +/- 4.2 vs. 25.4 +/- 5.3), Waist-to-Hip Ratio (WHR 0.87 +/- 0.053 vs. 0.86 +/- 0.05), decrease in self-reported hunger level (4.37 +/- 0.74 vs. 1.75 +/- 0.75) and the total number of risk factors (28 vs. 15). There was a strong negative correlation between fasting glucose and insulin levels at baseline and in the magnitude of change after the study (r = -0.93 and r = -0.85 respectively; p < 0.01). CONCLUSIONS A 6 week study demonstrated the practicality and effectiveness of this Low GL dietary approach. Despite of the unchanged body weight, Low GL diet consultations positively modified body fat content and cardiovascular risk factors in overweight or obese children.
Collapse
Affiliation(s)
- Zsuzsanna Fajcsak
- Semmelweis University, Faculty of Physical Education Sport Sciences, Budapest, Hungary.
| | | | | | | |
Collapse
|
34
|
Barclay AW, Petocz P, McMillan-Price J, Flood VM, Prvan T, Mitchell P, Brand-Miller JC. Glycemic index, glycemic load, and chronic disease risk--a meta-analysis of observational studies. Am J Clin Nutr 2008; 87:627-37. [PMID: 18326601 DOI: 10.1093/ajcn/87.3.627] [Citation(s) in RCA: 676] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Inconsistent findings from observational studies have prolonged the controversy over the effects of dietary glycemic index (GI) and glycemic load (GL) on the risk of certain chronic diseases. OBJECTIVE The objective was to evaluate the association between GI, GL, and chronic disease risk with the use of meta-analysis techniques. DESIGN A systematic review of published reports identified a total of 37 prospective cohort studies of GI and GL and chronic disease risk. Studies were stratified further according to the validity of the tools used to assess dietary intake. Rate ratios (RRs) were estimated in a Cox proportional hazards model and combined by using a random-effects model. RESULTS From 4 to 20 y of follow-up across studies, a total of 40 129 incident cases were identified. For the comparison between the highest and lowest quantiles of GI and GL, significant positive associations were found in fully adjusted models of validated studies for type 2 diabetes (GI RR = 1.40, 95% CI: 1.23, 1.59; GL RR = 1.27, 95% CI: 1.12, 1.45), coronary heart disease (GI RR = 1.25, 95% CI: 1.00, 1.56), gallbladder disease (GI RR = 1.26, 95% CI: 1.13, 1.40; GL RR = 1.41, 95% CI: 1.25, 1.60), breast cancer (GI RR = 1.08, 95% CI: 1.02, 1.16), and all diseases combined (GI RR = 1.14, 95% CI: 1.09, 1.19; GL RR = 1.09, 95% CI: 1.04, 1.15). CONCLUSIONS Low-GI and/or low-GL diets are independently associated with a reduced risk of certain chronic diseases. In diabetes and heart disease, the protection is comparable with that seen for whole grain and high fiber intakes. The findings support the hypothesis that higher postprandial glycemia is a universal mechanism for disease progression.
Collapse
Affiliation(s)
- Alan W Barclay
- Human Nutrition Unit, University of Sydney, Sydney, Australia
| | | | | | | | | | | | | |
Collapse
|
35
|
Huffman KM, Orenduff MC, Samsa GP, Houmard JA, Kraus WE, Bales CW. Dietary carbohydrate intake and high-sensitivity C-reactive protein in at-risk women and men. Am Heart J 2007; 154:962-8. [PMID: 17967604 DOI: 10.1016/j.ahj.2007.07.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2007] [Accepted: 07/17/2007] [Indexed: 11/26/2022]
Abstract
BACKGROUND The quality and quantity of dietary carbohydrate intake, measured as dietary glycemic load (GL), are associated with a number of cardiovascular disease (CVD) risk factors and, in healthy young women, are related to increased high-sensitivity C-reactive protein (hsCRP) concentrations. Our objective was to determine if GL is related to hsCRP and other measures of CVD risk in a population of sedentary, overweight, dyslipidemic middle-aged women and men enrolled in an exercise intervention trial (STRRIDE). METHODS This was a cross-sectional evaluation of the relationships between measures of dietary carbohydrate intake, calculated from food frequency questionnaire data, and CVD risk factors, including plasma hsCRP, measured in 171 subjects. RESULTS After adjusting for energy intake, GL and other measures of carbohydrate intake were not independently related to hsCRP (P > .05 for all). In the analyses performed separately for each sex, only the quantity of carbohydrate intake was independently related to hsCRP (R2 = 0.28, P < .04), and this relationship was present for women but not for men. The strongest relationship identified between GL and any CVD risk factor was for cardiorespiratory fitness (R2 = 0.12, P < .02); an elevated GL was associated with a lower level of fitness in all subjects, and this relationship persisted even when the findings were adjusted for energy intake and sex (R2 = 0.48, P < .03). CONCLUSIONS In middle-aged, sedentary, overweight to mildly obese, dyslipidemic individuals, consuming a diet with a low GL is associated with better cardiorespiratory fitness. Our findings suggest that the current literature relating carbohydrate intake and hsCRP should be viewed with skepticism, especially in the extension to at-risk populations that include men.
Collapse
|
36
|
Glycemic Index and Glycemic Load. Integr Med (Encinitas) 2007. [DOI: 10.1016/b978-1-4160-2954-0.50091-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
37
|
Abstract
Women who are obese with a history of gestational diabetes are at risk for developing type 2 diabetes and metabolic syndrome. A weight loss of as little as 15 pounds can decrease these long-term risks. This case presentation reviews practical issues related to encouraging women to make important lifestyle changes and to adhere to taking cholesterol-lowering medications.
Collapse
Affiliation(s)
- Mary K Barger
- Boston University School of Public Health, Boston, MA 02118, USA.
| | | |
Collapse
|
38
|
Abstract
BACKGROUND The glycaemic index (GI) is a physiological measure of the ability of a carbohydrate to affect blood glucose. Interest is growing in the low GI carbohydrate concept for the clinical management of people at risk of, or with established coronary heart disease. There is a need to review the current evidence from controlled trials in this area. OBJECTIVES The primary objective is to review the current evidence from RCTs that assess the relationship between the consumption of low glycaemic index diets and the effects on coronary heart disease and on risk factors for coronary heart disease. SEARCH STRATEGY We searched CENTRAL (Issue 4, 2003), MEDLINE (1966 to 2003), EMBASE (1980 to 2003) and CINAHL (1982 to 2003). We also contacted experts in the field. SELECTION CRITERIA We selected randomised controlled trials that assessed the effects of low glycaemic index diets, over a minimum of 4 weeks, on coronary heart disease (CHD) and risk factors. Participants included were adults who carry at least one major risk factor for coronary heart disease such as abnormal lipids, diabetes or being overweight. DATA COLLECTION AND ANALYSIS Two of our research team independently assessed trial quality and extracted data. Authors of the included studies were contacted for additional information when this was appropriate. MAIN RESULTS Fifteen randomised controlled trials met the inclusion criteria. No studies found reported the effect of low glycaemic index diets on CHD mortality or CHD events and morbidity. All fifteen included studies report the effect of low glycaemic index diets on major risk factors for CHD. Meta-analysis detected limited and weak evidence of a relationship between low glycaemic index diets and slightly lower total cholesterol, compared with higher glycaemic index diets. There is also limited and weak evidence of a small reduction in HbA1c after 12 weeks on low glycaemic index diets but not at 4 to 5 weeks. There is no evidence that low glycaemic index diets have an effect on LDL cholesterol or HDL cholesterol, triglycerides, fasting glucose or fasting insulin levels. REVIEWERS' CONCLUSIONS The evidence from randomised controlled trials showing that low glycaemic index diets reduces coronary heart disease and CHD risk factors is weak. Many of the trials identified were short-term, of poor quality and conducted on small sample sizes. There is a need for well designed, adequately powered, randomised controlled studies, of greater than 12 weeks duration to assess the effects of low glycaemic index diets for CHD.
Collapse
Affiliation(s)
- S Kelly
- School of Health and Social Care, University of Teesside, Middlesbrough, TS1 3BA, UK.
| | | | | | | |
Collapse
|